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Galaxy M21 128GB - Blue - Unlocked

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Customer reviews for Galaxy M21

Overall rating

8 verified reviews

Rating details

Accessories
3.9/5
Appearance
4.3/5
Battery
4.3/5
Lens & Camera
4.2/5
Overall performance
4.2/5
Packaging
4.2/5
Shipping
4.6/5

Reviews

Lynn H.
Verified purchase
Reviewed 10/11/2024, United Kingdom.
Easy to use website, lots of choice. Extremely happy with my new refurbished phone, my second one with Backmarket,unfortunately the first refurbished phone I had wouldn't keep its charge,hence this new one.
Galaxy M21 64GB - Black - Unlocked
Galaxy M21 64GB - Black - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
25/10/2024
Sana M.
Verified purchase
Reviewed 11/03/2026, United Kingdom.
Galaxy M21 64GB - Green - Unlocked
Galaxy M21 64GB - Green - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
20/02/2026
Picaduros D.
Verified purchase
Reviewed 23/07/2025, France.
A device that "fulfils" my wish of not having a "tablet" in my pocket. Very satisfactory condition even with this correct mention. Really prompt delivery (less than 24 hours!) even though this option was not ticked. Second device ordered from you and still satisfied.
Translated from French
Galaxy M21 64 Go - Bleu - Débloqué
Galaxy M21 64 Go - Bleu - Débloqué
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
09/07/2025
Marinette V.
Verified purchase
Reviewed 17/12/2023, France.
This is my 2nd experience with Back Market, delivery ahead of schedule! Getting it up and running went very well. The only downside was that I hadn't thought to order the appropriate protection and I had a lot of trouble finding it!
Translated from French
Galaxy M21 64 Go - Bleu - Débloqué
Galaxy M21 64 Go - Bleu - Débloqué
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
06/12/2023
Thomas K.
Verified purchase
Reviewed 22/10/2023, Germany.
The product is as described and expected . The service and contact is great . I find shipping with FedEx a bit inconvenient because you have to be at home for delivery. DHL would have worked better for me.
Translated from German
Galaxy M21 64GB - Blau - Ohne Vertrag
Galaxy M21 64GB - Blau - Ohne Vertrag
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
28/09/2023
Christian M.
Verified purchase
Reviewed 26/10/2025, France.
The appliance was fully compliant and the delivery was perfect, with a friendly and flexible driver. Perfect.
Translated from French
Galaxy M21 64 Go - Bleu - Débloqué
Galaxy M21 64 Go - Bleu - Débloqué
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
10/10/2025
Laurence G.
Verified purchase
Reviewed 28/12/2025, France.
Galaxy M21 64 Go - Bleu - Débloqué
Galaxy M21 64 Go - Bleu - Débloqué
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
18/12/2025

Everything you ever wanted to know about the Galaxy M21

Durability
Overall performance
Camera
Screen quality

UnlockedCarrier compatibility
NoCompatible with latest Update
microSDXCSD Card Slot
20 megapixelsFront camera
6.4Screen size (in)
Galaxy M21Model
128 GBStorage
0.9SAR head
2020Year of Release

The Samsung Galaxy M21 is a reliable smartphone that combines essential features with a user-friendly experience. Released in March 2020, it remains a solid choice for users who want a dependable device for everyday tasks.

Key features:

Display: 6.4-inch Super AMOLED, FHD+ resolution
Processor: Exynos 9611
Camera: Triple rear camera setup with 48MP main sensor
Storage: 128GB internal storage, expandable via microSD
Operating System: Ships with Android 10, upgradable to later versions

Who is this for?

The Samsung Galaxy M21 is ideal for students, casual users, or anyone seeking a smartphone that covers the basics without unnecessary frills. It’s particularly suitable for those who enjoy multimedia content thanks to its vibrant display.

Pros & Cons:

Pros	Cons
Vibrant Super AMOLED display for an enjoyable viewing experience.	Performance may lag under heavy multitasking.
Good battery life for daily usage.	Camera performance is decent but not exceptional in low light.

Why refurbished?

Choosing a refurbished Samsung Galaxy M21 allows you to access a quality smartphone while being environmentally conscious. Each device undergoes strict testing to ensure it meets high standards of quality. Learn more about our quality standards.

Carrier compatibility: Unlocked
Compatible with latest Update: No
SD Card Slot: microSDXC
Front camera: 20 megapixels
Screen size (in): 6.4
Model: Galaxy M21
Storage: 128 GB
SAR head: 0.9
Year of Release: 2020
Camera Type: Triple (3x)
Brand: Samsung
Colour: Blue
Colour (official name): Midnight Blue
Main camera: 48 megapixels
Resolution: 1080 x 2340
Weight: 188 g
Foldable: No
SIM card: Dual Physical SIM
Screen type: Super AMOLED
Serie: Samsung Galaxy M
Mobile network: 4G
OS: Android
Memory (GB): 6 GB
Manufacturer Ref: M215F

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Galaxy M21 128GB - Blue - Unlocked

Customer reviews for Galaxy M21

Overall rating

Rating details

Reviews

Reviews

Lynn H.

Sana M.

Picaduros D.

Marinette V.

Thomas K.

Christian M.

Laurence G.

Everything you ever wanted to know about the Galaxy M21

Durability

Overall performance

Camera

Screen quality

Welcome to Back Market